[Xen-changelog] fix logic of ballooning out to handle the dom0_min_mem parameter correctly

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User vh249@xxxxxxxxxxxxxxxxxxxxxx
# Node ID eb2c985e88be573f10f5ef48ff93fa1b2c1f0927
# Parent  342ccfca85d75872ff32074e6d9f697464a5e784
fix logic of ballooning out to handle the dom0_min_mem parameter correctly
add an error message when having not enough memory

Signed-off-by: Vincent Hanquez <vincent@xxxxxxxxxxxxx>

diff -r 342ccfca85d7 -r eb2c985e88be tools/python/xen/xm/create.py
--- a/tools/python/xen/xm/create.py     Sun Aug 21 16:24:23 2005
+++ b/tools/python/xen/xm/create.py     Sun Aug 21 16:49:54 2005
@@ -688,7 +688,9 @@
     dom0_cur_alloc = get_dom0_alloc()
     dom0_new_alloc = dom0_cur_alloc - (domU_need_mem - free_mem)
 
-    if free_mem < domU_need_mem and dom0_new_alloc >= dom0_min_mem:
+    if free_mem < domU_need_mem and dom0_new_alloc < dom0_min_mem:
+        ret = 1
+    if free_mem < domU_need_mem and ret == 0:
 
         server.xend_domain_mem_target_set(0, dom0_new_alloc)
 
@@ -734,7 +736,8 @@
         dom0_min_mem = xroot.get_dom0_min_mem()
         if dom0_min_mem != 0:
             if balloon_out(dom0_min_mem, opts):
-                return
+                print >>sys.stderr, "error: cannot allocate enough memory for 
domain"
+                sys.exit(1)
 
         dom = make_domain(opts, config)
         if opts.vals.console_autoconnect:

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